the lift-to-drag ratio (or L/D ratio) is the lift generated by an aerodynamic body such as an aerofoil or aircraft, divided by the aerodynamic drag caused...

lift-to-drag ratio increases with aspect ratio, improving the fuel economy in powered airplanes and the gliding angle of sailplanes. The aspect ratio...

The ratio of the distance forwards to downwards is called the glide ratio. The glide ratio (E) is numerically equal to the lift-to-drag ratio under...

drag. The lift/drag ratio is determined by dividing the lift coefficient by the drag coefficient, CL/CD. The lift coefficient Cl is equal to the lift...

Lift-induced drag, induced drag, vortex drag, or sometimes drag due to lift, in aerodynamics, is an aerodynamic drag force that occurs whenever a moving...

The drag curve or drag polar is the relationship between the drag on an aircraft and other variables, such as lift, the coefficient of lift, angle-of-attack...

lift-to-drag ratio. The lift a wing generates at a given speed and angle of attack can be one to two orders of magnitude greater than the total drag on...

the lower surface. Lift-to-drag ratio Drag coefficient Foil (fluid mechanics) Pitching moment Circulation control wing Zero lift axis Clancy, L. J. (1975)...

F=c_{p}P_{br}} Thrust power is the speed multiplied by the drag, is obtained from the lift-to-drag ratio: P a = V C D C L W g ; {\displaystyle P_{a}=V{\frac...

the aircraft. Winglets also reduce the lift-induced drag caused by wingtip vortices and improve lift-to-drag ratio. This increases fuel efficiency in powered...

ratio of 2.5, increasing to 3.5-4 for the HTV-2 and 4-5 for the HTV-3. The actual lift-to-drag ratio of HTV-2 was estimated to be 2.6. HTV-2 was to lead...

increase drag while making little change to lift, whereas spoilers reduce the lift-to-drag ratio and require a higher angle of attack to maintain lift, resulting...

thrust-to-weight ratio and lift-to-drag ratio are the two most important parameters in determining the performance of an aircraft. The thrust-to-weight...

"cranked-arrow" wing (similar to that of the Saab 35 Draken) was pursued due to its much more efficient lift-to-drag ratio at supersonic speeds. The company...

the zero-lift drag coefficient C D , 0 {\displaystyle C_{D,0}} is a dimensionless parameter which relates an aircraft's zero-lift drag force to its size...

density of the air is lower. For propeller aircraft, drag is minimised when the lift-to-drag ratio is maximised. However, the speed for this is typically...

whereas lift-induced drag is the result of an airfoil generating lift. Parasitic drag comprises all types of drag except lift-induced drag. Form drag arises...

typically possible to construct small capsules of performance comparable to lifting body or spaceplane designs in all but lift-to-drag ratio for less cost...

same aspect ratio and an elliptical lift distribution. The Oswald efficiency is defined for the cases where the overall coefficient of drag of the wing...

Early hang gliders had a low lift-to-drag ratio, so pilots were restricted to gliding down small hills. By the 1980s this ratio significantly improved, and...

Because of differences in lift generation, aircraft operating at supersonic speeds have approximately one-half the lift-to-drag ratio of subsonic aircraft...

region of flight below the maximum lift to drag ratio, where induced drag becomes more significant than parasitic drag. Slow flight can be as slow as 3-5...

airfoil. It is used for near-supersonic flight and produces a higher lift-to-drag ratio at near supersonic flight than traditional airfoils. Supercritical...

force on the object. Lift is the component of this force that is perpendicular to the oncoming flow direction. It contrasts with the drag force, which is the...

maximizing lift-to-drag ratio, which is attained by minimizing parasitic drag and lift-generated induced drag, the two components of aerodynamic drag. As parasitic...

the transition speed, the magnetic drag decreases with speed. For example, at 500 km/h (310 mph) the lift to drag ratio is 200:1, far higher than any aircraft...

section; it gives reasonable overall performance in respect of its lift-to-drag ratio, and has gentle and relatively benign stall characteristics. The flat...

lightness and strength. The geometry of wingsails provides more lift, and a better lift-to-drag ratio, than traditional sails. Wingsails are more complex and...

supersonic lift-to-drag ratio by using the shock waves being generated by its own flight as a lifting surface, a phenomenon known as compression lift. The waverider...

about the forces in gliding flight, see lift-to-drag ratio. Pilots need some form of control over the glide slope to land the glider. In powered aircraft...